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Diffstat (limited to 'include/linux/usb/langwell_otg.h')
-rw-r--r--include/linux/usb/langwell_otg.h177
1 files changed, 177 insertions, 0 deletions
diff --git a/include/linux/usb/langwell_otg.h b/include/linux/usb/langwell_otg.h
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+++ b/include/linux/usb/langwell_otg.h
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+/*
+ * Intel Langwell USB OTG transceiver driver
+ * Copyright (C) 2008, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef __LANGWELL_OTG_H__
+#define __LANGWELL_OTG_H__
+
+/* notify transceiver driver about OTG events */
+extern void langwell_update_transceiver(void);
+/* HCD register bus driver */
+extern int langwell_register_host(struct pci_driver *host_driver);
+/* HCD unregister bus driver */
+extern void langwell_unregister_host(struct pci_driver *host_driver);
+/* DCD register bus driver */
+extern int langwell_register_peripheral(struct pci_driver *client_driver);
+/* DCD unregister bus driver */
+extern void langwell_unregister_peripheral(struct pci_driver *client_driver);
+/* No silent failure, output warning message */
+extern void langwell_otg_nsf_msg(unsigned long message);
+
+#define CI_USBCMD 0x30
+# define USBCMD_RST BIT(1)
+# define USBCMD_RS BIT(0)
+#define CI_USBSTS 0x34
+# define USBSTS_SLI BIT(8)
+# define USBSTS_URI BIT(6)
+# define USBSTS_PCI BIT(2)
+#define CI_PORTSC1 0x74
+# define PORTSC_PP BIT(12)
+# define PORTSC_LS (BIT(11) | BIT(10))
+# define PORTSC_SUSP BIT(7)
+# define PORTSC_CCS BIT(0)
+#define CI_HOSTPC1 0xb4
+# define HOSTPC1_PHCD BIT(22)
+#define CI_OTGSC 0xf4
+# define OTGSC_DPIE BIT(30)
+# define OTGSC_1MSE BIT(29)
+# define OTGSC_BSEIE BIT(28)
+# define OTGSC_BSVIE BIT(27)
+# define OTGSC_ASVIE BIT(26)
+# define OTGSC_AVVIE BIT(25)
+# define OTGSC_IDIE BIT(24)
+# define OTGSC_DPIS BIT(22)
+# define OTGSC_1MSS BIT(21)
+# define OTGSC_BSEIS BIT(20)
+# define OTGSC_BSVIS BIT(19)
+# define OTGSC_ASVIS BIT(18)
+# define OTGSC_AVVIS BIT(17)
+# define OTGSC_IDIS BIT(16)
+# define OTGSC_DPS BIT(14)
+# define OTGSC_1MST BIT(13)
+# define OTGSC_BSE BIT(12)
+# define OTGSC_BSV BIT(11)
+# define OTGSC_ASV BIT(10)
+# define OTGSC_AVV BIT(9)
+# define OTGSC_ID BIT(8)
+# define OTGSC_HABA BIT(7)
+# define OTGSC_HADP BIT(6)
+# define OTGSC_IDPU BIT(5)
+# define OTGSC_DP BIT(4)
+# define OTGSC_OT BIT(3)
+# define OTGSC_HAAR BIT(2)
+# define OTGSC_VC BIT(1)
+# define OTGSC_VD BIT(0)
+# define OTGSC_INTEN_MASK (0x7f << 24)
+# define OTGSC_INTSTS_MASK (0x7f << 16)
+#define CI_USBMODE 0xf8
+# define USBMODE_CM (BIT(1) | BIT(0))
+# define USBMODE_IDLE 0
+# define USBMODE_DEVICE 0x2
+# define USBMODE_HOST 0x3
+
+#define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI)
+
+struct otg_hsm {
+ /* Input */
+ int a_bus_resume;
+ int a_bus_suspend;
+ int a_conn;
+ int a_sess_vld;
+ int a_srp_det;
+ int a_vbus_vld;
+ int b_bus_resume;
+ int b_bus_suspend;
+ int b_conn;
+ int b_se0_srp;
+ int b_sess_end;
+ int b_sess_vld;
+ int id;
+
+ /* Internal variables */
+ int a_set_b_hnp_en;
+ int b_srp_done;
+ int b_hnp_enable;
+
+ /* Timeout indicator for timers */
+ int a_wait_vrise_tmout;
+ int a_wait_bcon_tmout;
+ int a_aidl_bdis_tmout;
+ int b_ase0_brst_tmout;
+ int b_bus_suspend_tmout;
+ int b_srp_res_tmout;
+
+ /* Informative variables */
+ int a_bus_drop;
+ int a_bus_req;
+ int a_clr_err;
+ int a_suspend_req;
+ int b_bus_req;
+
+ /* Output */
+ int drv_vbus;
+ int loc_conn;
+ int loc_sof;
+
+ /* Others */
+ int b_bus_suspend_vld;
+};
+
+#define TA_WAIT_VRISE 100
+#define TA_WAIT_BCON 30000
+#define TA_AIDL_BDIS 15000
+#define TB_ASE0_BRST 5000
+#define TB_SE0_SRP 2
+#define TB_SRP_RES 100
+#define TB_BUS_SUSPEND 500
+
+struct langwell_otg_timer {
+ unsigned long expires; /* Number of count increase to timeout */
+ unsigned long count; /* Tick counter */
+ void (*function)(unsigned long); /* Timeout function */
+ unsigned long data; /* Data passed to function */
+ struct list_head list;
+};
+
+struct langwell_otg {
+ struct otg_transceiver otg;
+ struct otg_hsm hsm;
+ void __iomem *regs;
+ unsigned region;
+ struct pci_driver *host_ops;
+ struct pci_driver *client_ops;
+ struct pci_dev *pdev;
+ struct work_struct work;
+ struct workqueue_struct *qwork;
+ spinlock_t lock;
+ spinlock_t wq_lock;
+};
+
+static inline struct langwell_otg *otg_to_langwell(struct otg_transceiver *otg)
+{
+ return container_of(otg, struct langwell_otg, otg);
+}
+
+#ifdef DEBUG
+#define otg_dbg(fmt, args...) \
+ printk(KERN_DEBUG fmt , ## args)
+#else
+#define otg_dbg(fmt, args...) \
+ do { } while (0)
+#endif /* DEBUG */
+#endif /* __LANGWELL_OTG_H__ */